Pressure Switch Continuity - State Water Heaters Utra-Force STC-077 Service Handbook

STEP 7 PRESSURE SWITCH CONTINUITY TEST
STEP 7: CHECK FOR CONTINUITY BETWEEN PRESSURE SWITCH TERMINALS WITH
WIRES REMOVED.
Condition:
• On/Off switch is off.
• All wires are disconnected from all pressure switches.
• Multimeter is set to lowest ohms scale.
IF...
blocked inlet switch does not show continuity
blocked inlet switch does show continuity
blower proving switch does show continuity
blower proving switch does not show continuity
low gas pressure switch does not show continuity
low gas pressure switch does show continuity
blocked outlet pressure switch does not show continuity
blocked outlet pressure switch does show continuity
Technical Training Department
STC-077
S U F S E R V I C E
T R O U B L E S H O O T I N G

PRESSURE SWITCH CONTINUITY

H A N D B O O K
24
THEN
replace switch.
continue.
replace switch.
continue.
check for minimum supply gas
pressure of
5.0" W.C. natural gas
9.0" W.C. LP gas
replace switch if gas pressures
are above these minimums.
continue.
replace switch.
reconnect all wires to pressure
switches; continue to Step 8.
State Water Heaters
Ashland City, Tennessee © 2004